Switching power supply - is it possible to adjust the output voltage by changing the input?

Question

Electronics

Good day!
There is a source of direct current 0-200 Volts 16 Amps, you need to get 4-12 Volts, 4 Amps maximum from it.
The fact is that the source is regulated by a multiple of 12 volts.
Is it possible to use a switching power supply and will it survive such perversions?
PS I know that it is possible to power a pulsed constant, but I don’t know if he will try to stabilize the output voltage to 12 volts, thereby burning out at a reduced, for example, 20 volts?

Answer 1

Will not be regulated.

Answer 2

Yes, pulse generators usually have a built-in output voltage stabilization system.
theoretically, you can break the negative feedback circuit and then the output voltage will be a multiple of the input.
but this may be a bad mode of operation for the circuit - i.e. the circuit will burn.
it is more efficient to take an adjustable power supply for 4-12 volts 4A in the radio.
or a laboratory power supply if the voltage is constantly changing.
or with a trimmer, but this one will not last long with active adjustment.